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Functional safety forum

Use this forum to discuss functional safety topics and risk, reliability and safety engineering issues for manufacturing plants and safety products and systems. This forum addresses standards like IEC 61508, IEC 61511, ISA S84, EN 50402 and more.

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Topic Replies Author Last reply

SIL loops, devices, architectural constraints

2

manual reset + solenoid valve

Failure mode of ESD buttons over communications link

0

PFS 's formula

4

Re: PFS 's formula

Has a lock-step architecture HFT=1?

2

Re: Has a lock-step architecture HFT=1?

certification

3

Re: certification

Hardware Fault Tolerance

1

Re: Hardware Fault Tolerance

EN 62061, Machines & possible multiple deaths

1

Re: EN 62061, Machines & possible multiple deaths

DC of a 1oo2D-system

1

Re: DC of a 1oo2D-system

Testing Proof Procedures to demonstrate the functionality of the SIS devices

2

Re: Testing Proof Procedures to demonstrate the functionality of the SIS devices

IEC 61508 Change management/control

2

Re: IEC 61508 Change management/control

how to maintain the SIS

5

Re: how to maintain the SIS

How to calculate PFD of redundant sensors

3

Re: How to calculate PFD of redundant sensors

Determining SIL for SRS by Risk matrix

3

Re: Determining SIL for SRS by Risk matrix

Certification?

7

Re: Certification?

% SIL for final elements?

1

Re: %SIL for final elements

Determining the SIL

2

Re: Determining the SIL

Question about lifecycle

1

Re: Question about lifecycle

OPC servers & safety systems

1

Re:

SIL or Spurious calculation for 1002/2003/2002

1

Re: SIL or Spurious calculation for 1oo2/2oo3/2oo2

Legal status IEC 61508/61511

2

Re: Legal status IEC 61508/61511